Well, Canadian45, you are of course entitled to your opinion about alternate punctuation but you must realise that there are some basic standards set on this forum and the established members, teachers, moderators and exceptional non-native speakers will point out diversions from and errors in punctuation and capitalisation in every thread.
We spend a lot of time explaining to users that a single word can and does constitute a sentence so we expect 'Thanks', 'Yes' and 'No' to be capitalised and, if they appear as a standalone sentence, then they should have a full stop at the end.
Also bear in mind that, as a native speaker, the learners on this forum will expect everything you write to be grammatically correct, spelt/spelled correctly, and capitalised and punctuated correctly. There are odd occasions when the native speakers disagree on how something should be written but, in the main, we all stick to the same 'rules'. This serves, above all, to avoid the learners getting very confused by seeing different systems and constructions employed by different native speakers.
Whenever a new native speaker joins the forum, especially one who immediately starts to answer learners' questions, we spend quite some time perusing posts by that person to check their English. The moderators correct minor typos in each other's posts on a regular basis because we can easily tell what is a typo and what isn't. With new members, like you, we have to read posts to see the constructions and standards used. For example, in your fifth point above, you wrote "as apposed to". At this point, we don't know if that is a simple typo or if you don't know how to spell "opposed" correctly.
So, with all due respect, none of it is "nonsense". This is what we do and we will continue to read, check and, if necessary, correct posts by every user on the forum.